Magnum head drill jig

It's hard to find an intake that fits the magnum heads and a 340 block. Does your lntake have the magnum bolt pattern, the angled bypass hose, the bosses for the rv-2 AC compressor and the bosses for the coil bracket? I never seen a photo of a Edelbrock RPM magnum intake. Do you need to change the throttle cable bracket and kick down too? I see those crosswinds chineese knockoffs intakes can be used on LA's or magnum's. I don't want to buy one of those though. Bob